Century Aluminum CO CENX
Institutional shares held
57.4 Million
4M
calls
1.82M
puts
Total value of holdings
$1.65B
$115M
calls
$52.4M
puts
Market Cap
$2.63B
91,358,096
Shares Out.
Institutional ownership
62.82%
# of Institutions
288
We take great care to ensure that the data presented and summarized in this overview for CENTURY ALUMINUM CO is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.
Top Institutions Holding CENX
View all-
Black Rock Inc. New York, NY9.8MShares$282 Million0.0% of portfolio
-
Vanguard Group Inc Valley Forge, PA5.85MShares$168 Million0.0% of portfolio
-
State Street Corp Boston, MA4.22MShares$121 Million0.0% of portfolio
-
Dimensional Fund Advisors LP Austin, TX3.06MShares$88.1 Million0.02% of portfolio
-
Sourcerock Group LLC Denver, CO2.64MShares$76 Million5.81% of portfolio
-
Ken Griffin Citadel Advisors LLC | Chicago, Il1.51MShares$43.3 Million0.01% of portfolio
-
Mirae Asset Global Etfs Holdings Ltd. Central, K31.46MShares$41.9 Million0.08% of portfolio
-
Morgan Stanley New York, NY1.43MShares$41.2 Million0.0% of portfolio
-
Geode Capital Management, LLC Boston, MA1.32MShares$38 Million0.0% of portfolio
-
Boston Partners Boston, MA1.14MShares$32.8 Million0.04% of portfolio
Latest Institutional Activity in CENX
Top Purchases
Top Sells
About CENX
Century Aluminum Company, together with its subsidiaries, produces standard-grade and value-added primary aluminum products in the United States and Iceland. It also owns and operates a carbon anode production facility in the Netherlands. The company was incorporated in 1981 and is headquartered in Chicago, Illinois.
Insider Transactions at CENX
Insider Transaction List
View all| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Jan 01
2026
|
Gunnar Gudlaugsson EVP - Global Operations |
BUY
Grant, award, or other acquisition
|
Direct |
15,624
+8.01%
|
-
|
|
Jan 01
2026
|
Jesse E Gary President and CEO |
BUY
Grant, award, or other acquisition
|
Direct |
57,443
+8.85%
|
-
|
|
Jan 01
2026
|
Peter A Trpkovski EVP, CFO and Treasurer |
BUY
Grant, award, or other acquisition
|
Direct |
13,488
+13.68%
|
-
|
|
Jan 01
2026
|
Agust F Hafberg SVP & Chief Commercial Officer |
BUY
Grant, award, or other acquisition
|
Direct |
5,238
+7.16%
|
-
|
|
Jan 01
2026
|
Robert F Hoffman SVP, IT and CAO |
BUY
Grant, award, or other acquisition
|
Direct |
5,122
+6.22%
|
-
|
|
Jan 01
2026
|
Kenneth L Calloway SVP, Human Resources |
BUY
Grant, award, or other acquisition
|
Direct |
5,238
+10.88%
|
-
|
|
Jan 01
2026
|
John De Zee EVP, GC and Secretary |
BUY
Grant, award, or other acquisition
|
Direct |
9,821
+5.66%
|
-
|
|
Jan 01
2026
|
Matt Aboud SVP, Strategy & Business Dev't |
BUY
Grant, award, or other acquisition
|
Direct |
5,529
+6.47%
|
-
|
|
Dec 31
2025
|
Gunnar Gudlaugsson EVP - Global Operations |
SELL
Payment of exercise price or tax liability
|
Direct |
62,829
-14.91%
|
$2,450,331
$39.18 P/Share
|
|
Dec 31
2025
|
Gunnar Gudlaugsson EVP - Global Operations |
BUY
Grant, award, or other acquisition
|
Direct |
82,794
+26.76%
|
-
|
|
Dec 31
2025
|
Jesse E Gary President and CEO |
SELL
Payment of exercise price or tax liability
|
Direct |
270,842
-18.24%
|
$10,562,838
$39.18 P/Share
|
|
Dec 31
2025
|
Jesse E Gary President and CEO |
BUY
Grant, award, or other acquisition
|
Direct |
439,090
+35.29%
|
-
|
|
Dec 31
2025
|
Peter A Trpkovski EVP, CFO and Treasurer |
SELL
Payment of exercise price or tax liability
|
Direct |
12,135
-7.5%
|
$473,265
$39.18 P/Share
|
|
Dec 31
2025
|
Peter A Trpkovski EVP, CFO and Treasurer |
BUY
Grant, award, or other acquisition
|
Direct |
18,260
+17.9%
|
-
|
|
Dec 31
2025
|
Agust F Hafberg SVP & Chief Commercial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
23,433
-14.61%
|
$913,887
$39.18 P/Share
|
|
Dec 31
2025
|
Agust F Hafberg SVP & Chief Commercial Officer |
BUY
Grant, award, or other acquisition
|
Direct |
30,878
+26.39%
|
-
|
|
Dec 31
2025
|
Robert F Hoffman SVP, IT and CAO |
SELL
Payment of exercise price or tax liability
|
Direct |
18,683
-10.84%
|
$728,637
$39.18 P/Share
|
|
Dec 31
2025
|
Robert F Hoffman SVP, IT and CAO |
BUY
Grant, award, or other acquisition
|
Direct |
31,650
+25.86%
|
-
|
|
Dec 31
2025
|
Kenneth L Calloway SVP, Human Resources |
SELL
Payment of exercise price or tax liability
|
Direct |
9,192
-10.33%
|
$358,488
$39.18 P/Share
|
|
Dec 31
2025
|
Kenneth L Calloway SVP, Human Resources |
BUY
Grant, award, or other acquisition
|
Direct |
18,150
+27.92%
|
-
|
Last 12 Months Summary
Buy / Acquisition
5.98M
Shares
From
15
Insiders
| Grant, award, or other acquisition | 880K shares |
|---|---|
| Bona fide gift | 127K shares |
| Conversion of derivative security | 4.97M shares |
Sell / Disposition
9.63M
Shares
From
15
Insiders
| Payment of exercise price or tax liability | 462K shares |
|---|---|
| Bona fide gift | 127K shares |
| Open market or private sale | 9.05M shares |